Hello,
I am currently working on an rtsp client application on an
embedded system and have been trying to use libcurl version 7.21.7.
The problem that I have is that whilst I can receive the
options, describe, setup and teardown responses I cannot receive any
data packets even though they are clearly being sent from the server
(captured in wireshark). Am I correct in saying that once the following
sequence has been sent data should arrive in the desired function
'rtsp_write' or am I missing something critical.
curl_easy_set_opt(curl, CURLOPT_NOPROGRESS, 1L);
curl_easy_set_opt(curl, CURLOPT_VERBOSE, 1L);
curl_easy_set_opt(curl, CURLOPT_URL, url);
curl_easy_set_opt(curl, CURLOPT_WRITEHEADDER, stdout);
// options
curl_easy_set_opt(curl, CURLOPT_RTSP_STREAM_URI, uri);
curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_OPTIONS);
curl_easy_perform(curl);
// describe
curl_easy_set_opt(curl, CURLOPT_WRITEDATA, sdp);
curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_DESCRIBE);
curl_easy_perform(curl);
curl_easy_set_opt(curl, CURLOPT_WRITEDATA, stdout);
// setup the stream
curl_easy_set_opt(curl, CURLOPT_RTSP_STREAM_URI, uri);
curl_easy_set_opt(curl, CURLOPT_RTSP_TRANSPORT, transport);
curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_SETUP);
curl_easy_perform(curl);
// play the stream
curl_easy_set_opt(curl, CURLOPT_RTSP_STREAM_URI, uri);
curl_easy_set_opt(curl, CURLOPT_RTSP_RANGE, NULL);
curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_PLAY);
curl_easy_perform(curl);
// setup receive function for data
curl_easy_set_opt(curl, CURLOPT_WRITEFUNCTION, rtsp_write);
curl_easy_set_opt(curl, CURLOPT_WRITEDATA, NULL);
// process loop
while(!ctx->terminate)
{
SDL_Delay(10);
}
// end stream
curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_TEARDOWN);
curl_easy_perform(curl);
Kind Regards
Michael Dale
Building Block Video Ltd
17 Apex Park
Hailsham
East Sussex,
BN27 3JU
England
Tel:+44(0)1323 842727
Fax:+44(0)1323 842728
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